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Three of the 19 shooting victims are still in critical condition, police say

New Orleans police arrested a second suspect in the Mother's Day shooting that wounded 19 people this week, including three still in critical condition, authorities said Thursday.

The two suspects are believed to be involved in gangs, police said. No further details were immediately available, authorities said.

Meanwhile, the first suspect, Akein Scott, 19, is facing 20 counts of attempted second-degree murder in the Sunday shooting, and his bail was set at $10 million during his first appearance in Orleans Parish Magistrate Court on Thursday morning, court records said.

Scott's next hearing is scheduled for July 16.

Among the three people still in critical condition from the shooting is a reporter, police said.

A SWAT team was used during Scott's arrest Wednesday night in east New Orleans, CNN affiliate WDSU reported.